   #include<stdio.h>
   #include<stdlib.h>
   #include<unistd.h>
   #include<sys/types.h>
   int main()
   {
     pid_t ret =fork();
     if(ret>0)
     {
      printf("i am father...... pid::%d...ppid...%d\n",getpid(),getppid());
      exit(0);
    }
    else if(ret==0)
    {
      int i=0;                                                                                                                                                              
      for( i=0;i<10;i++)
      {
      printf("i am child......pid::%d...ppid...%d\n",getpid(),getppid());
      exit(0);
      }
    }
    else
    {
      printf("error\n");
  }
    return 0;
  }
  
